The Lost Art of Keeping a SecretIn the fall of 1997, a quiet college town in central Illinois became the scene of the most horrific killing spree in American history. The murders stopped as abruptly as they began; no arrests were ever made. Three years later, the killers are still running. They roam the country, picking up work as day laborers and changing their names in every town, staying only as long as it takes to find the next deserving victim and then moving on. Two of them